<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>sso</title>
</head>
<body>
<form action="logincheck" method="post">
	<input type="text"  name="userName" value="" />
	<input type="password" name="userPassword" value="" />
	<input type="hidden" name="reurl" value=""  id="reurl"/>
	<input type="submit" />
</form>
<script type="text/javascript">
	function GetQueryString(name)
{
     var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)");
     var r = window.location.search.substr(1).match(reg);
     if(r!=null)return  unescape(r[2]); return null;
}
// 调用方法
var url=GetQueryString("reurl");
document.getElementById('reurl').value=(url==null?"":url);

</script>
</body>
</html>